Improvement in elevators and conveyers



T. LLPOWELL. ELBVATOR AND GONVEYER.

N0 111,859- Patented Feb. 14, 1871.

dirti/ell glatte THOMAS J. POWELL, OF NAPLES, NEW YORK Letters Patent No. 111,869, dated February 14, 1871.

IMPROVEMENT IN ELEVATORS AND CONVEVERS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concer/L Be it known that I, Thomas J. lownnn, ol Naples, in the county ol' Ontario and State of New York, have invented a certain new and useful lmprovemcnt in Combined Elevators and (lonveyers, of which the following is a specilica-tion.

Nature of the Invention.

This invention is similar in gencra-Lprinciple to my patent on the same subject dated May 24, 1870. it consists in an improved arrangement o" the working,r parts, as hereinafter described.

General Description,

In the drawing- Figure l is a side elevation.

Figure 2, a sectional elevation ol' the carryingblock and the operating parts connected therewith.

Figure 3, a plan of the same.

A represents the carriage;

l, the swivelcd carrying-block resting therein; and

(l, the way or trackiou which the carriage moves.

These parts are the same as in my aforesaid patent, and do not require special mention here.

v D is the pulley in the block, over which. runs the hoisting-chain or rope;

ld is the hook-lever; and

G, the pawl, pivoted respectively at a and b.

1l is the elbow, by which the hook-lever and pawl re held and. released.

The construction ot' these parts is as follows:

The elbow is provided with two shoulders, c d, one below the other, which act in conjunction with two pins or stops, fg, in the front ends of t-he hook-lever ulnlpawl, which rest in the crotch or forks of the elbow. When the elbow is thrown backward these shoulders rest under the pins or stops, and when thrown forward they release them.

lhc elbow also has a projection, h, at the bottom, against which strikes the ring, disk, or stop 7.', or eqr-iivalcnt, onthe hoisting-chain I, to throw forward tho elbow and disengage it from the lever and pawl.

The rear end oi' the lever has a hoop, 1), and an inclined plane, s. 4

The rear end ol'thc pin/vl also has a wedge-head, 1'.

These parts act in conjunction with the eye or catch K, to lock and unlock the carriagefroin said eye.

.lhe action is as follows:

When the carriage slides up tothe eye or catch the hook 11 passes through and beyond the eye.

The incline s of the lever then strikes the upper side j of the eye, thereby depressing the hook so as to engage in the back movement; it also elevates the forward end of the lever so that shoulderc may tall underpin f, thereby locking,r the hook in place. At

the saine time, wedge-head o of the pawl strikes on the under side of the eye, thereby elev... :3 the forward end of the pawl so as to release the hoistingchain, which it has held against the pulley D, and also allowing shoulder (l to strike under piu g.

When the ring, disk, or equivalent, r, again strikes the lower end of the elbow, as before described, it releases both thc lever and pawl, and the latter falls and secures the chain. lhe slight incline of the hook also allows it to draw out ot' and through the eye, and the carriage is again at liberty. a.. s.

In my patent of May 24: bnf' or pawl was employed, having a ho M. end to engage with the eye or catch. My present "ice dit` fers from this in the use of' the two parts E and H, though the operation might be made effective with but the lever E'and elbow, the forward part of' lever formed and used for apawl.

A special novelty consists in the 'combination of the elbow ll with these two parts in such a mr. ier that they are engaged and released by the elbow at one operation, and either simultaneously or in succession, as may be desired. By this means the locking of the carriage to the eye orcatch and the holding of the hoisting-chain in au elevated position while the carriage is moving are performed by two distinct and independent devices, and not by one, as in my former patents, which renders the. operation very safe and reliable. At the same time the single elbow H performs the' one action ot' holding auf'` releasing both automatically.

Another novelty' lies in the construction of the lever and pawl with the hook p, inclined plane s, and wedgehead e. These parts combined insure the proper aclfion ci' the lever and pawl.v

' Various modifications or changes in the arrangement may be made. without departingfrom the principle ofthe invention; for instance, the hook-lever may be turned bottom upward, and the eye or catch be made to correspond, and the elbow be made to act over instead of under the lever; or the under pawl might be connected with the upper lever, so as to be raised by it by means of a rod or chain, or other device, dispensing with the wedge end, being still retained or fastened bythe elbow below described; or tht eye or catch may be made with a brace from its lower part, fastened to the track or to itself, and may be made wit-h an incline to raise the rea-r end of the pawl, instead of having the wedge-head before described. 'lhe position of the elbow may also be reversed,l and it may be operated by tbe rod and ring described in my former patent.

The hoisting-chain may be attached directly to the load, or pass through pulleys, as mziy be desired, and

0 latins.

. lVhat I claim, amd desire to secure by Letters Patent, isl

1.. lhe combination and arrangement of the elbow H with the hook-lever E and pawl G, as herein described, whereby both are looked or released by one action of the elbow.

2. The arrangement of the double shoulders c l of the elbow and. the pins or stops fg of the lever :tml pawl, operating eonjointly, in the manner and for the purpose specified. l

3. The. arrangement o f the hook-head p, the incline s, and the wedge-head u of the lever nndpmvl, operating iu connection with the eye or catch K, in the mannerand for the purpose specified.

In wit-ness whereof I have hereunto set my hand' this 26th day of October, 1870. y

' THOMAS J. POWELL.

Witnesses:

S. J. WILBUR, JOHN JORDAN. 

